ONIII. Outdoor disconnector DTR EN

Transcription

1 Installation and service manual ONIII Outdoor disconnector DTR EN

2 Dear customer! Thank sincerly for purchasing our product. We are glad to deliver you an outdoor disconnector ONIII, which has been designed in order to meet your usable needs. We are deeply convinced that advantages of the apparatus would be confirmed during exploitation. The instruction is intended for outdoor disconnectors type ONIII. The instruction includes technical data, design description and also recommendation for adjustment and service. The instruction has been issued with an intention to help in proper installation, servicing and operation of the disconnectors. Follow carefully requirements specifed in this instruction ensures troublefree service of disconnectors and determines the validity of manufacturer s guarantee. Carefully read and understand this instruction sheet before installation, operation and maintenance of disconnectors. Would you have any questions, please contact ZWAE Sp. z o.o. We kindly remind basic principles of exploitation the outdoor disconnectors: - follow strictly the principles included in this instruction, - perform periodic inspections of disconnectors, consistent with principles included in this instruction, - use only recommended operational materials, - all inspections and services perform consistent with health and safety at work rules. Observance of recommendations included in this instruction ensures permanent disconnector s efficiency. Zakład Wytwórczy Aparatów Elektrycznych ZWAE Sp. z o.o. 60 Gdańska Str Lębork, Poland Phone: Web site: zwae@zwae.com.pl Page 2/16

3 1. APPLICATION. Outdoor disconnector type ONIII-123 is an insulating, two-columnar switch, with rotating and horizontal contacts movement. It is dedicated to cooperation with networks with voltage up to 123 kv and frequency up to 60 Hz (including 60 Hz). Outdoor disconnector type ONIII-245 is an insulating, two-columnar switch, with rotating and horizontal contacts movement. It is dedicated to cooperation with networks with voltage up to 245 kv and frequency up to 60 Hz (including 60 Hz). Disconnector could be used as a single-pole switch with individual operating mechanism or in three-pole set with one common operating mechanism. Disconnector s poles could be placed in parallel or serial connection. Disconnector s visual drawing in parallel connection is presented below. Current path Supporting structure Rotating base Earthing switches coupling mechanism Poles coupling mechanism Right-sided earthing switch Operating mechanism s supporting structure Left-sided earthing switch Operating mechanism Figure 1. Visual drawing 2. COMPLIANCE WITH STANDARDS. Outdoor disconnectors type ONIII-123 and ONIII-245 meet standards of PN-EN :2005+A1:2011+A2: and PN-EN :2009+A1:2011 rules. 3. SERVICE CONDITIONS. Disconnector is adjusted to outdoor work in temperate climate in following conditions: a) temperature...from 233 (-40 C) up to 313 K (+40 C) b) air humidity...up to 100% with temperature 293 K (20 C) c) altitude above the sea level...up to 1000 m d) wind pressure...up to 700 Pa e) ice coating thickness...up to 10 mm Page 3/16

4 4. BASIC TECHNICAL PARAMETERS. INo.tem Parameter Value 1. Rated operating voltage: 72,5 [kv] 123 [kv] 1600 [A] 1600 [A] 2. Rated permanent current: [A] [A] 3150 [A] 3150 [A] 245 [kv] 1600 [A] [A] 3150 [A] 3. Peak current: 125 [ka] 125 [ka] 125 [ka] 4. Short-circuit current, 1 sec.: 50 [ka] 50 [ka] 50 [ka] 5. Test voltage (50 Hz) for insulation: - to earth and between phases, - between contacts of one pole. 140 [kv] 160 [kv] 230 [kv] 265 [kv] 460 [kv] 530 [kv] 6. Surge test voltage for insulation: - to earth and between phases, - between contacts of one pole. 325 [kv] 375 [kv] 550 [kv] 630 [kv] 1050 [kv] 1200 [kv] 7. Wireless noise voltage < 1000 [uv] < 1000 [uv] < 1000 [uv] 8. Rated mechanical operating life: 2000 cycles 2000 cycles 2000 cycles 9. Dedicated operating mechanism: - motor, - manual. NSO80 NR-5 NSO80 NR-5 NSO80 NR Disconnector s weight: - without earthing switch, - with one earthing switch, - with two earthing switches. 195 [kg] 215 [kg] 255 [kg] 215 [kg] 233 [kg] 251 [kg] 289 [kg] 565 [kg] 600 [kg] 635 [kg] 660 [kg] 5. DESIGN Disconnector type ONIII is built with three detached poles [Figure 2]. Each pole possess individual supporting structure [1], equipped with rotating bases [2], where porcelain insulators [3] are placed. On the top of each insulator a current path is assembled [4]. Both insulators are coupled with lever-set [7], providing counter - rotating insulators movement, with an angle of 90. One from disconnector s poles (driving pole) possess beared crank [5], which together with tie rod [6] connected with one insulator s column form transmission, serving to transfer rotating movement from operating mechanism to insulators Figure 2. Disconnector s pole Page 4/16

5 5.1. Disconnector s ONIII-123 supporting structure. The base of the disconnector [3] is made as a rigid welded frame of steel shapes [1]. In order to protect corrosion, supporting structure surface is hot-dip galvanized. In the middle part are placed holes, prepared for assembly crank transmissions and supporting structures for operating mechanism. At the both endings of supporting structure are placed holes, prepared for assembly rotating base [2] and assembly angle sections aside [3]. Depends on supporting structure, assembly angle sections could be performed in various constructions [3a] a Figure 3. Disconnector s pole supporting structure Rotating base [2] is installed with using four threaded pins [4]. This enables correct insulator s adjustment, after connecting wires to current path The rotating base construction [Figure 4] enables maintenance-free operating during disconnector s service life. On a steel axle [1] set of cone bearings [2] is located. On bearings external surfaces is located hub [3] which is a support for porcelain insulators. At the top of the hub is a rubber seal [4], which seals bearings space after an insulator s assembly. Bearings are covered with high-viscosity lubricant [LOCTITE ANTISIZE], which protects the surface against corrosion. Figure 4. Rotating base Page 5/16

6 5.2. Driving structure Disconnector s pole kinematic system is built on the basis of articulated square. Figure 5 presents two limit positions of the mechanism. Immovable part is pole s supporting structure. Rotating bases together with levers [1; 2] and tie rod [3] forms moveable system, which ensures counter - rotating insulators turn with an angle 90. Rotation is limited by end stop, assembled on supporting structure. Figure 5. Pole s kinematic structure Disconnector s pole driving structure, same as kinematic system, is built on the basis of articulated square. Figure 6 presents disconnector s pole driving diagram. The turn of crank [2] through tie rod [3] is transfered to lever [1]. Figure 6. Pole s driving structure 5.3. Poles coupling. 1 2 Disconnector s poles [Figure 7] are connected with coupling tie rods [2], which together with levers [1] installed on rotating buses form articulated square. Drive is transfered from driving pole to both remaining poles. Figure 7. Disconnector s driving system 5.4. Current paths. Disconnector s current path [Figure 8] is made from aluminium - copper alloy. It consists four basic parts: rotating head [2] with terminal [1], right current path [3], left current path [4] and central contact (disconnecting) [5]. Page 6/16 Figure 8. Current paths

7 6. DISCONNECTOR ASSEMBLY. The delivered disconnector is completly regulated and ready to work. Assembly is reduced to: a) adjustment poles on a supporting structure, b) attach supporting construction for the operating mechanisms, c) assembly operating mechanisms, d) poles coupling and its regulation, e) earthing switches coupling, f) earthing switches regulation, g) supporting structure and operating mechanism earthing connection. Preparing contact surfaces. Resistance of connected elements contacts depends mostly on quality and cleanliness of contact surfaces. That surfaces should be very carefully prepared. The way of preparing aluminium, silver, copper and zinc surfaces is described below: - aluminium - aluminium connection From contact surface an oxyde layer has to be removed, using wire brush. Surface should be matt-grey and free from bright areas. If the surface is dirty, remove petroleum jelly (acid-free) and apply a new layer in order to protect from aluminium oxidation. Such prepared surface should not be exposed for atmosphere effect. - copper - silver connection Copper surfaces have to be cleaned from oxydes, using brass wire brush and then please follow aluminium surfaces instruction. Silver coated surfaces do not require cleaning with brush, but it is allowed to clean them with using soft abrasive substance, for example steel wool. After cleaning operation, the surface must be coated with thin layer of petroleum jelly. - zinc - zinc connection Surfaces have to be cleaned using wire brush and then should be coated with thin layer of lubricant Poles adjustment. Disconnector s poles should be adjusted to supporting structure with using propoer mounting holes [Figure 9]. When assembling poles to the supporting structure, pay attention to driving pole s location. Assembly method is shown in figure 10. After tightening the disconnector poles to the supporting structure, connect the wires. ONIII-123 Holes ONIII-245 Screw M B Washer 17 Spring washer B16-A2 Nut M B Figure 10. ONIII-123 pole s assembly Figure 9. Mounting holes location Disconnector ONIII-245 is assembled to supporting structure using M20 screws. Page 7/16

8 6.2. Operating mechanism s supporting structure assembly. Operating mechanisms supporting structures should be mounted on the disconnector s pole having drive cranks in the middle part of the base. Installation lies in removing the crank mounting screws and inserting the supporting structrure between the angles of the base and re-tighten the screws. Assembly method is shown in figure Operating mechanisms assembly. Operating mechanism should be assembled on supporting structure, under driving crank located in disconnector s base. After the operating mechanism mounting, a coupling shaft, connecting operating mechanism with crank, should be assembled. Assembly method is shown in figure 11. Crank gearing Coupling shaft Supporting structure Operating mechanism Screw s bolting torque: M12 = 80 Nm M16 = 100 Nm 6.4. Poles coupling and regulation. Figure 11. Supporting structures and operating mechanisms assembly Coupling tie rods After adjustment poles on a supporting structure, current paths limit locations should be verified and, if necessary, buffer locations and disconnector s kinematic system s tie rods length should be checked. Figure 13 presents disconnector s pole regulation points. After end of poles working inspections, it is enabled to assembly coupling tie rods. Figure 12 shows a coupling tie rods way of assembly. Screw s bolting torque: M=80 Nm Figure 12. Poles coupling Page 8/16

9 Current path mutual position control tie rod Current path rotation angle regulation tie rod Current path position adjustment screws Figure 13. Disconnector s regulation points Current path rotation angle end stop min C A min C A B min E min D min E min E Type ONIII-72 ONIII-123 A B C ONIII D E Figure 14. Fixed limit positions Page 9/16

10 Poles coupling regulation lies in tie rod length and coupling lever location adjustment, in order to current paths in each poles would be in end position in accordance with requirements [Figure 14]. Regulation process should be performed in following way: a) install coupling tie rods, in such a way that one pole would not be connected (tie rod ending hang on a line, below coupling lever), b) extend or shorten coupling tie rod, so that current path in driving pole would achieve require end position. If tie rod length change foreclose achievement of the end position, driving lever position should be changed. Figure 15 presents disconnector s pole actuating while changing driving lever position, with fixed tie rod s length. After each change of lever s position it is necessary to correct drive line s length and check current paths end position. c) after finishing one pole s coupling regulation it is permitted to tighten up tie rod to the last pole and repeat steps from subpoint b. Regulation lever - Left position Earthing switches coupling. Regulation lever - Right position. Figure 15. Disconnector s poles actuating during regulation process Regulation lever - Middle position. Earthing switches have to be coupled using coupling shafts, which length is described in figure 16. Way of coupling is presented in figure 17. (Apply to ONIII-72 and ONIII-123) A [mm] A Application Disconnector s and earthing switches driving shaft Coupling shaft - left earthing switch Coupling shaft - right earthing switch Figure 16. Coupling shafts length Page 10/16

11 6.6. Earthing switches operating regulation. Coupling shaft M12 screw s bolting torque: M = 80 Nm Figure 17. Earthing switches coupling Earthing regulation lies in coupling shaft adjustment, in order to earthing blades on each pole should achieve end positions in accordance with requirements presented in figure 19 and earthing circuit closing occur simultaneously. On earthing switches coupling shaft should be set earthing switch s locking, in order to enable earthing work only with open disconnector. Figure 18 shows the locking way of adjustment. ~6 Figure 18. Earthing switch s locking adjustment Page 11/16

12 Contacts contact points location In lower end position, the earthing blade s ending can not be located over insulators coupling tie rod. (Apply to ONIII-72 and ONIII-123) Figure 19. Earthing s regulation requirements 6.7. Supporting structures earthing. After disconnector s and earthing switches regulation, apparatus supporting structures have to be earthed. Earthing terminals are marked on disconnector s supporting structure. In case of connecting protection earthing to disconnector equipped with earthing blade, an earthing wire should be connected as close as possible to line linking earthing blade with supporting structure. Terminals location is presented in figure 20. Holes Holes Page 12/16 Figure 20. Earthing terminals location

13 7. OPERATING MANUAL. Disconnector s manoeuvring is an effect of appropriate motor or manual operating mechanism s functioning. 7.1 Notes about connecting activities. - While disconnector s or its earthing switch s manoeuvring all safety at work rules applicable in installation s location should be respected. - Energized disconnector can be manoeuvred only when capacity of intermittent current will have negligible value or any significant voltage change between any pole s contact elements would appear. Disconnector equipped with commutating contacts is ready to switch off currents specified in technical data. - Do not close the disconnector when earthing blade is closed. - Disconnector s earthing switch can be manoeuvred from open to closed position only:! If the disconnector is in open position,! After ensuring that earthing switch will be working under discharging current of the bushings, rails, incoming supplies, short cables and power lines capacities, with current and voltage parameters specified in technical data. 8. INSPECTIONS AND MAINTENANCE Visual inspections. It is recommended to carry out visual inspections in accordance with rules being in force in switchgear or after each failure or short circuit. Check in particular: a) condition of current path s central contacts, b) condition of earthing switch s contacts Periodical check-ups. It is recommended to perform periodical and maintenance check-ups in accordance with rules being in force in switchgear. During check-up and maintenance the using of energetic devices rules and health and safety at work rules have to be respected. Check and perform in particular: - condition of current path s central contacts, - condition of earthing switch s contacts, - condition of mechanisms, bearings and connection components, - correction of achieving limit positions, - condition of anti-corrosion protective coatings, - lubricate current path s central contacts and earthing switch s contacts, - lubricate ball joints Spare parts and recommended service materials. The use of high quality components and exploitation experience indicate long liveness of disconnectors (about 30 years). However in case of damages, the manufacturer provides spare parts in accordance to customers order. Ordered spare parts could be assembled only with the producer s knowledge and agreement in quarantee s period. For disconnectors maintenance, materials listed below have to be used: - WHITE PHARMACEUTICAL PETROLEUM JELLY (acid-free) used for lubrication electric contacts (earthings, contacts of HV switches) - LUBRICANT for bearings, for example ŁT4 or similar, used for lubricating ball joints. 9. SPARE PARTS. Disconnector type ONIII does not possess parts, which should be replaced during normal operation in service life. Due to damages caused by unfortunate chance occurence the manufacturer provides spare parts. Page 13/16

14 10. PACKING, TRANSPORT AND STORAGE Shipment packing and transport. Disconnector s poles are transported in assembled condition. During delivery it is necessary to protect disconnectors against knocking over and central contact should be in open state. Disconnector is allowed to be transported in open means of transport Storage Disconnector s poles could be keep in open spaces, on condition that poles have to be placed so that supporting structure is not standing directly on the ground. 11. GUARANTEE. Guarantee s conditions are under manufacturer and customer negotiations. 12. FIGURES LIST. Visual drawing...page 3 Disconnector s pole...page 4 Disconnector s pole supporting structure...page 5 Rotating base...page 5 Pole s kinematic structure...page 6 Pole s driving structure...page 6 Disconnector s driving system...page 6 Current paths...page 6 Mounting holes location...page 7 Pole s assembly...page 7 Supporting structures and operating mechanisms assembly...page 8 Poles coupling...page 8 Disconnector s regulation points...page 9 Fixed limit positions...page 9 Disconnector s poles actuating during regulation process...page 10 Coupling shafts length...page 10 Earthing switches coupling...page 11 Earthing switch s locking adjustment...page 11 Earthing s regulation requirements...page 12 Earthing terminals location...page 12 Disconnectors ONIII-72 and ONIII-123 dimensions drawing...page 15 Disconnector ONIII-245 dimensions drawing...page 16 Page 14/16

15 C A A G 8xφ13 H D B E 4xφ Mounting holes location Clamp s material: aluminium A 1:10 Type ONIII-72 ONIII-123 A B C D E F G H Figure 22. Disconnectors ONIII-123 and ONIII-72 dimensions drawing Page 15/16

16 Mounting holes location Figure 23. Disconnector s ONIII-245 dimensions drawing Page 16/16